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Finding the Fourth Proportional to 330,293.76, 455,994.24 and 217,444.56

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Solution

The fourth proportional to 330,293.76, 455,994.24 and 217,444.56 is: 300,197.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,293.76 : 455,994.24 = 217,444.56 : x
  2. Step 2: Convert to fraction form
    330,293.76/455,994.24 = 217,444.56/x
  3. Step 3: Cross multiply
    330,293.76x = 455,994.24 × 217,444.56
  4. Step 4: Simplify right side
    330,293.76x = 99,153,466,879.33
  5. Step 5: Solve for x
    x = 99,153,466,879.33/330,293.76
  6. Step 6: Final answer
    x = 300,197.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.